This was what he liked about Rethik. He was very easy-going, even though he did sometimes explode.
-Liam Brightcrest about Rethik Hasing
Rethik Hasing is one of the many children of Joakim and Felisa Hasing. He is a Rider of hippogriffs, like his father, had therefore has a young female hippogriff named Syth. Despite having so many siblings, almost none of them are mentioned in The Sun of Brightcrest, although an expection is Gretel, as Rethik is very close to her.
Even though he's a good friend of Liam's, he has this on-going rivalry between him and Blayze Brightcrest, Liam's best friend. This is nothing unusual, as Riders and knights tend to have dodgy relationships, though Rethik and Liam are an expection. He, unlike Liam, does not have magic, though some Riders do. This does not prevent them from being an unseperable pair when Blayze is away, and it's these periods Rethik looks most forward to.